公开(公告)号：WO2008104757A1

公开(公告)日：2008-09-04

申请号：PCT/GB2008/000642

申请日：2008-02-26

Applicant: TATE & LYLE PUBLIC LIMITED COMPANY ,  NOBES, Geoffrey, A., R. ,  SIISTONEN, Heikki, Kalervo ,  SÖDERGARD, Nils, Dan, Anders ,  STOLT, Erik, Mikael

Inventor： NOBES, Geoffrey, A., R. ,  SIISTONEN, Heikki, Kalervo ,  SÖDERGARD, Nils, Dan, Anders ,  STOLT, Erik, Mikael

IPC: C08L67/04

CPC classification number: C08L67/04 ,  C08L2666/18

Abstract: Polylactic acid blends having a relatively high heat distortion temperature can be prepared by simple blending of PLA polymers of opposite stereoforms, followed by processing, e.g. by injection moulding, under specific conditions of temperature and pressure, so as to produce a blend which, on differential scanning calorimetry, exhibits two peaks within the melting range of the stereocomplex. Moreover, by careful selection of these conditions of temperature and pressure, it is possible to use PLA polymers of significantly higher molecular weights than previously thought possible.

Abstract translation: 具有相对高的热变形温度的聚乳酸共混物可以通过简单混合相对立体形式的PLA聚合物，然后加工，例如， 通过注射成型，在特定的温度和压力条件下，以产生在差示扫描量热法上在立体络合物的熔融范围内呈现两个峰的共混物。 此外，通过仔细选择这些温度和压力条件，可以使用比先前认为可能的显着更高分子量的PLA聚合物。